Omg, you should go to joystiq or kotaku, the rabid fanboism on those sites for the 360/ps3 is insane. Just mention that you have fun on the wii even once and you'll get flamed.
But OT, the SNES/Genesis period was the worst. The N64/PS1 was almost as bad because the Sony crowd was crowing about winning and Nintendo fans were on the defensive. I would say this is the same as the N64/PS1 era since its another case of one group suddenly losing out to another one that wasn't taken so seriously at first.